There are many obscure and bizarre theories floating around out there about what might have happened to Lord Lucan after he disappeared in 1974. That is why this incredible mystery has turned into such a fantastical myth. But even so... the weird ending of ITV's latest Lord Lucan two-parter - Lucan - was, well, one hell of a stretch.

For better or worse, Lucan is a part of our culture. It's unfortunate, but there it is. How ever distasteful it may be for his family, Lord Lucan is now public property, and it would be facile to pretend otherwise. Though Lucan may be their father, we all now have a share in him.

It's very rare to hear this from a journalist, but there is one story out there, one huge monumental mystery, which I hope will never be resolved. I am talking about the greatest and most enduring mystery of the 20th Century: The Lord Lucan scandal.

Has there ever been a murder mystery story quite so compelling as the Lord Lucan scandal? The reason this mystery continues to fascinate is not so much because of the tragic murder, but because we are still captivated by one single dominant question: what on earth happened to the Seventh Earl of Lucan?